any agression. His bark is enough I think. It is extrememly LOUD!!!! Though when he was confronted by the neighbor's dog that used to wander over here all the time.. He and Charlie were not friendly. Eventully the other dog learned to stand at the bottom of his driveway and mark while Charlie could see him. Then Charlie would do the same thing. A real pissing contest. LOL.

There are occassions where his bottom teeth are exposed and it looks like he is smiling. I think I have one photo of him doing it. He looks so cut but it is rare that it occurs.